Finding the Fourth Proportional to 3,580.38, 5,340.04 and 3,518.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,580.38 : 5,340.04 = 3,518.03 : x
2. Step 2: Convert to fraction form
   3,580.38/5,340.04 = 3,518.03/x
3. Step 3: Cross multiply
   3,580.38x = 5,340.04 × 3,518.03
4. Step 4: Simplify right side
   3,580.38x = 18,786,425.48
5. Step 5: Solve for x
   x = 18,786,425.48/3,580.38
6. Step 6: Final answer
   x = 5,247.05